我正在尝试使用 tikz 并排创建两个饼图。我在网上找到了一个代码，正在改编，到目前为止，它似乎有效。但是，我不想在下面使用单独的图例，而是想在图表中的数字 % 附近插入系列标签。有人知道我该如何修改下面的代码来实现它吗？
在此先感谢您提供的任何帮助。
\documentclass[twoside,a4paper,12pt]{report}
\usepackage{tikz}
\usetikzlibrary{chains,positioning,shapes.symbols}
%define each color I want to use for each country/slice
\definecolor{Australia} {RGB} {47,117,181}
\definecolor{Brazil} {RGB} {0,176,80}
\definecolor{Canada} {RGB} {244,176,132}
\definecolor{China} {RGB} {191,143,0}
\definecolor{France} {RGB} {155,194,230}
\definecolor{Germany} {RGB} {198,89,17}
\definecolor{Greece} {RGB} {221,235,247}
\definecolor{Guinea} {RGB} {255,0,255}
\definecolor{Guyana} {RGB} {255,217,102}
\definecolor{Hungary} {RGB} {198,224,180}
\definecolor{India} {RGB} {248,203,173}
\definecolor{Indonesia} {RGB} {146,208,80}
\definecolor{Ireland} {RGB} {255,217,0}
\definecolor{Jamaica} {RGB} {131,60,12}
\definecolor{Japan} {RGB} {31,78,120}
\definecolor{Middle East} {RGB} {84,130,53}
\definecolor{Norway} {RGB} {255,255,0}
\definecolor{Russia} {RGB} {255,0,0}
\definecolor{Suriname} {RGB} {112,48,160}
\definecolor{UK} {RGB} {204,51,0}
\definecolor{USA} {RGB} {0,0,255}
\definecolor{USSR} {RGB} {255,0,0}
\definecolor{Others} {RGB} {166,166,166}
\tikzstyle{chart}=[legend label/.style={font={\scriptsize},anchor=west,align=left},
legend box/.style={rectangle, draw, minimum size=5pt},
axis/.style={black,semithick,->},
axis label/.style={anchor=east,font={\tiny}},]
\tikzstyle{pie chart}=[chart,
slice/.style={line cap=round, line join=round, very thick,draw=white},
pie title/.style={font={\bf}},
slice type/.style 2 args={
##1/.style={fill=##2},
values of ##1/.style={}}]
\pgfdeclarelayer{background}
\pgfdeclarelayer{foreground}
\pgfsetlayers{background,main,foreground}
\newcommand{\pie}[3][]{
\begin{scope}[#1]
\pgfmathsetmacro{\curA}{90}
\pgfmathsetmacro{\r}{1}
\def\c{(0,0)}
\node[pie title] at (90:1.5) {#2};
\foreach \v/\s in{#3}{
\pgfmathsetmacro{\deltaA}{\v/100*360}
\pgfmathsetmacro{\nextA}{\curA + \deltaA}
\pgfmathsetmacro{\midA}{(\curA+\nextA)/2}
\path[slice,\s] \c
-- +(\curA:\r)
arc (\curA:\nextA:\r)
-- cycle;
\pgfmathsetmacro{\d}{max((\deltaA * -(.5/50) + 1) , .5)}
\begin{pgfonlayer}{foreground}
\path \c -- node[pos=\d,pie values,values of \s]{$\v\%$} +(\midA:\r);
\end{pgfonlayer}
\global\let\curA\nextA
}
\end{scope}}
\newcommand{\legend}[2][]{
\begin{scope}[#1]
\path
\foreach \n/\s in {#2}
{
++(0,-10pt) node[\s,legend box] {} +(5pt,0) node[legend label] {\n}
}
;
\end{scope}
}
\begin{document}
\begin{figure}
\centering
\begin{tikzpicture}
[ pie chart,
slice type={Australia}{Australia},
slice type={Brazil}{Brazil},
slice type={Canada}{Canada},
slice type={China}{China},
slice type={France}{France},
slice type={Germany}{Germany},
slice type={Greece}{Greece},
slice type={Guinea}{Guinea},
slice type={Guyana}{Guyana},
slice type={Hungary}{Hungary},
slice type={India}{India},
slice type={Indonesia}{Indonesia},
slice type={Ireland}{Ireland},
slice type={Jamaica}{Jamaica},
slice type={Japan}{Japan},
slice type={Middle East}{Middle East},
slice type={Norway}{Norway},
slice type={Russia}{Russia},
slice type={Suriname}{Suriname},
slice type={UK}{UK},
slice type={USA}{USA},
slice type={USSR}{USSR},
slice type={Others}{Others},
pie values/.style={font={\small}},
scale=2
]
\pie[xshift=0cm,values of Australia/.style={pos=1.2},values of Jamaica/.style={pos=1.2},values of Suriname/.style={pos=1.2},values of USSR/.style={pos=1.2},values of France/.style={pos=1.2},values of Greece/.style={pos=1.2},values of Guinea/.style={pos=1.2},values of Guyana/.style={pos=1.2},values of Hungary/.style={pos=1.2},,values of Others/.style={pos=1.2}]%
{1972}{20/Australia,18/Jamaica,10/Suriname,11/USSR,5/France,3/Greece,4/Guinea,5/Guyana,3/Hungary,21/Others}
\pie[xshift=4cm,values of Australia/.style={pos=1.2},values of Brazil/.style={pos=1.2},values of China/.style={pos=1.2},values of Indonesia/.style={pos=1.2},,values of Guinea/.style={pos=1.2},values of India/.style={pos=1.2},values of Jamaica/.style={pos=1.2},values of Russia/.style={pos=1.2},values of Others/.style={pos=1.2}]%
{2010}{32/Australia,15/Brazil,14/China,11/Indonesia,8/Guinea,6/India,4/Jamaica,3/Russia,7/Others}
\legend[shift={(-2cm,-1.5cm)}]{{Australia}/Australia,{Brazil}/Brazil,{China}/China}
\legend[shift={(-0.5cm,-1.5cm)}]{{France}/France,{Greece}/Greece,{Guinea}/Guinea}
\legend[shift={(1cm,-1.5cm)}]{{Guyana}/Guyana,{Hungary}/Hungary,{India}/India}
\legend[shift={(2.5cm,-1.5cm)}]{{Indonesia}/Indonesia,{Jamaica}/Jamaica,{Russia}/Russia}
\legend[shift={(4cm,-1.5cm)}]{{Suriname}/Suriname,{USSR}/USSR,{Others}/Others}
\end{tikzpicture}
\end{figure}
\end{document}
答案1
这里介绍一种不使用饼图来显示数据的方法，而是使用斜率图：
\documentclass{article}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[y=0.35cm, x=2cm]
\foreach \nameA/\offsetA/\valA/\valB/\nameB/\offsetB in {
Australia/ 0/ 20/ 32/ Australia/ 0,
Jamaica/ 0/ 18/ 4/ Jamaica/ 0,
Suriname/ 0/ 10/ -1/ / 0,
USSR/ 0/ 11/ 3/ Russia/ 0,
France/ 0/ 5/ -1/ / 0,
Greece/ -2ex/ 3/ -1/ / 0,
Guinea/ 0/ 4/ 8/ Guinea/ 0,
Guyana/ 2ex/ 5/ -1/ 0,
Hungary/ 0/ 3/ -1/ 0,
Others/ 0/ 21/ 7/ Others/ 0,
Brazil/ 0/ -1/ 15/ Brazil/ 0,
China/ 0/ -1/ 14/ China/ 0,
India/ 0/ -1/ 6/ India/ 0,
Indonesia/ 0/ -1/ 11/ Indonesia/ 0
}{
\ifdim\valA pt<0pt
\draw (1,\valB) -- ++(0.1,0) node [anchor=mid west, yshift=\offsetB, yshift=-0.4ex] {\valB\ \ \nameB};
\else
\ifdim\valB pt<0pt
\draw (-0.1,\valA) node [anchor=mid east, yshift=\offsetA, yshift=-0.4ex] {\nameA\ \ \valA} -- ++(0.1,0);
\else
\draw (-0.1,\valA) node [anchor=mid east, yshift=\offsetA, yshift=-0.4ex] {\nameA\ \ \valA} -- ++(0.1,0) --
(1,\valB) -- ++(0.1,0) node [anchor=mid west, yshift=\offsetB, yshift=-0.4ex] {\valB\ \ \nameB};
\fi
\fi
}
\node [font=\bfseries\large, anchor=east] at (-0.1,0) {1972};
\node [font=\bfseries\large, anchor=west] at (1.1,0) {2010};
\end{tikzpicture}%
\end{document}